SOLUTION: x=-2y^2 whats the directrix focal diameter, and focus

SOLUTION: x=-2y^2 whats the directrix focal diameter, and focus

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Question 980374: x=-2y^2
whats the directrix focal diameter, and focus
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
Standard form for parabola:
Focus is at (a,0)
Directrix at x=-a
Focal diameter is
.
x=-2y^2 Convert to standard form.

a=-1/8
Focus at (-1/8,0)
Directrix at x=1/8
Focal diameter is =1/2

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